Bill Klein writes: You can pull a train engine and tender onto the turntable in the round house, then turn it 180 degrees and send it back out on the same track going the other direction. Or a train and tender could be pulled in and parked temporarily while the turntable is turned 15 degrees to take on another train engine and tender to be pulled into the Round House. (When the ACGHS National show was in Alabama a few years back, I believe the dinner and meeting was held in a Round House at the train museum park.)